Superheater element and header flange are done for the Princess Marina boiler. I've opted for a single larger 3/8" radiant element rather than two smaller non-radiant 1/4" ones. It extends to the back of the firebox and has about 4 inches exposed to the fire.
My line of thinking was the Martin Evans Simplex design has a single non-radiant 3/8" superheater and it does well, and this loco has smaller cylinders. So the same size element with slower moving steam and radiant higher temp superheating should give quite a good performance.
Happy steaming!
Nigel
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